Application-driven shared device queue polling

• US 9,354,952 B2
• Filed: 12/12/2014
• Issued: 05/31/2016
• Est. Priority Date: 11/30/2011
• Status: Active Grant

• Current Assignee: Red Hat Israel Ltd. (International Business Machines Corporation)
• Original Assignee: Red Hat Israel Ltd. (International Business Machines Corporation)
• Inventors: Tsirkin, Michael
• Primary Examiner(s): Nguyen, Quang N
• Application Number:
  US14/568,476
• Publication Number:
  US 20150100970A1
• Time in Patent Office: 536 Days
• Field of Search: 709/206, 709/217, 709/229, 709/230, 709/238, 709/203, 709/213, 709/223, 709/224, 710/48, 712/216, 719/314, 705/37, 370/252
• US Class Current: 1/1
• CPC Class Codes: G06F 13/24 using interrupt G06F13/32 takes precedence
• CPC Class Codes: G06F 9/544 Buffers; Shared memory; Pipes
• CPC Class Codes: G06F 9/546 Message passing systems or structures, e.g. queues

Abstract

Methods and systems relate to receiving, at a system device, a first request from an operating system, the first request identifying shared queue and providing an instruction to the system device to enable polling of the identified shared queue, enabling, by a processing device, polling of the identified shared queue, wherein enabling polling comprises identifying a message in the identified shared queue and polling information related to the identified shared queue, and disabling, by the processing device, a device interrupt associated with the message in the identified shared queue.

Claims

1. A method comprising:

receiving, at a system device, a first request from an operating system, the first request identifying a shared queue and providing an instruction to the system device to enable polling of the identified shared queue;

enabling, by a processing device, polling of the identified shared queue, wherein enabling polling comprises identifying a message in the identified shared queue and polling information related to the identified shared queue; and

disabling, by the processing device, a device interrupt associated with the message in the identified shared queue.

2. The method of claim 1, wherein the device interrupt is disabled in response to receiving the first request to enable polling of the identified shared queue.

3. The method of claim 1, wherein the device interrupt is disabled in response to enabling polling of the identified shared queue.

4. The method of claim 1, further comprising receiving a second request from the operating system, the second request comprising a second instruction to the system device to disable polling of the identified shared queue.

5. The method of claim 4, further comprising:

re-enabling the device interrupt upon receiving the second request to disable polling of the identified shared queue.

6. The method of claim 1, further comprising:

defining a threshold value associated with the identified shared queue; and

disabling polling of the identified shared queue in response to determining that the threshold value has been met or exceeded.

7. The method of claim 6, wherein the threshold value represents at least one of a time period for polling the identified shared queue or a data allowance limit for polling the identified shared queue.

8. The method of claim 1, wherein the first request comprises a threshold value associated with the identified shared queue.

9. A non-transitory computer-readable storage medium comprising instructions that, when executed by a processing device, cause the processing device to:

receive, at a system device, a first request from an operating system, the first request identifying a shared queue and providing an instruction to the system device to enable polling of the identified shared queue;

enable, by the processing device, polling of the identified shared queue, wherein enabling polling comprises identifying a message in the identified shared queue and polling information related to the identified shared queue; and

disable, by the processing device, a device interrupt associated with the message in the identified shared queue.

10. The non-transitory computer-readable storage medium of claim 9, wherein the device interrupt is disabled in response to receiving the first request to enable polling of the identified shared queue.

11. The non-transitory computer-readable storage medium of claim 9, wherein the device interrupt is disabled in response to enabling polling of the identified shared queue.

12. The non-transitory computer-readable storage medium of claim 9, wherein the processing device is further to receive a second request from the operating system, the second request comprising a second instruction to the system device to disable polling of the identified shared queue.

13. The non-transitory computer-readable storage medium of claim 12, wherein the processing device is further to re-enable the device interrupt upon receiving the second request to disable polling of the identified shared queue.

14. The non-transitory computer-readable storage medium of claim 9, wherein the processing device is further to:

define a threshold value associated with the identified shared queue; and

disable polling of the identified shared queue in response to determining that the threshold value has been met or exceeded.

15. The non-transitory computer-readable storage medium of claim 14, wherein the threshold value represents at least one of a time period for polling the identified shared queue or a data allowance limit for polling the identified shared queue.

16. A system comprising:

a memory;

a processing device, communicatively coupled to the memory, to;

receive, at a system device, a first request from an operating system, the first request identifying a shared queue and providing an instruction to the system device to enable polling of the identified shared queue;

enable polling of the identified shared queue, wherein enabling polling comprises identifying a message in the identified shared queue and polling information related to the identified shared queue; and

disable a device interrupt associated with the message in the identified shared queue.

17. The system of claim 16, wherein the device interrupt is disabled in response to receiving the first request to enable polling of the identified shared queue.

18. The system of claim 16, wherein the device interrupt is disabled in response to enabling polling of the identified shared queue.

19. The system of claim 16, wherein the processing device is further to receive a second request from the operating system, the second request comprising a second instruction to the system device to disable polling of the identified shared queue.

20. The system of claim 19, wherein the processing device is further to re-enable the device interrupt upon receiving the second request to disable polling of the identified shared queue.